© OSU Department of Forest Ecosystems and Society  

Chris Still

Chris Still

Assistant Professor
Forest Ecosystems and Society
Oregon State University
Corvallis, Oregon 97331
E-mail: still@eri.ucsb.edu
Website: http://www.geog.ucsb.edu/~cstill/
View CV: Still CV



Ph.D. Stanford University (Biological Sciences), 2000.
B.S. Colorado State University (Biochemistry).

Research Interests:

My research is centered upon interactions between terrestrial ecosystems and the atmosphere at a variety of spatial and temporal scales, with a particular focus on interactions between clouds and forests, and on carbon cycle-climate interactions at a variety of spatial scales in tropical grasslands and savannas. I seek out and enjoy interdisciplinary collaborations, and I am very interested in questions and approaches that explicitly interface my work with a range of disciplines including forestry, geosciences, geography, and atmospheric sciences.

Students and postdoctoral scholars in my lab have focused on various aspects of ecology and biogeochemistry, including ecophysiology, hydrology, and ecosystem and landscape ecology. A key focus is studying interactions between plants and the atmosphere, such as exchanges of carbon and water during photosynthesis, transpiration, and respiration, and using isotopes to better understand those exchanges. Students and postdocs in my group have studied a variety of topics, but the three broad areas of interest have been the following: (1) the biogeography and biogeochemistry of C4 vegetation at a range of spatial (site to global) and temporal scales; (2) interactions between coastal clouds and forest ecosystems along the California coast; and (3) better understanding the terrestrial ecosystem controls on regional- to global-scale variations in the 13C and 18O composition of atmospheric CO2.


Buenning, N.H., Noone, D.C., Riley, W.J., Still, C.J., and J.W.C. White. Influences of the hydrological cycle on observed interannual variations in atmospheric CO18O Journal of Geophysical Research-Biogeosciences 116, No. G4, G04001 http://dx.doi.org/10.1029/2010JG001576 (2011).

Carbone, M.S., Still, C.J. Ambrose, A.M., Dawson, T.E., Williams, A.P., Boot, C.M., Schaeffer, S.M., and J.P. Schimel. Seasonal and episodic moisture controls on plant and microbial contributions to soil respiration. Oecologia 167(1):265-278 DOI: 10.1007/s00442-011-1975-3 (2011)

Still, C.J. and Powell, R.L. Continental-scale distributions of plant stable carbon isotopes. Isoscapes: Understanding movement, pattern, and process on Earth through isotope mapping (Eds. West, J.B., Bowen, G.J., Dawson, T.E., and K. Tu). Springer (Dordrecht, The Netherlands) (2010).

Edwards, E.J., et al. The origins of C4 grasslands: Integrating evolutionary and ecosystem science. Science 328, 587 DOI: 10.1126/science.1177216 (2010).

Eckmann, T.C., Still, C.J., Roberts, D.A., and J. Michaelsen. Variations in subpixel fire properties with season and land cover in southern Africa. Earth Interactions DOI: 10.1175/2010EI328.1 (2010).

Williams, A.P., Allen, C.D., Millar, C.I., Swetnam, T.W., Michaelsen, J., Still, C.J., and S.W. Leavitt Forest responses to increasing aridity and warmth in the southwestern United States. Proceedings of the National Academy of Sciences USA DOI:10.1073/pnas.0914211107 (2010).

Torn, M., Biraud, S., Still, C.J., Riley, W.J., and J.A. Berry. Seasonal and interannual variability in 13C composition of ecosystem carbon fluxes in the U.S. Southern Great Plains. Tellus B DOI:10.1111/j.1600-0889.2010.00519.x (2010).

Still, C.J., Riley, W.J., Biraud, S.C., Noone, D.C., Buenning, N.H., Randerson J.T., Torn, M.S., Welker, J., White, J.W.C., Vachon, R., Farquhar, G.D., and J.A. Berry. The influence of clouds and diffuse radiation on ecosystem-atmosphere CO2 and CO18O exchanges. Journal of Geophysical Research-Biogeosciences 114, G01018, DOI:10.1029/2007JG000675 (2009).

Fischer, D.T., Williams, A.P. and C.J. Still. Significance of summer overcast and fog to drought stress and ecological functioning of coastal California endemic species. J. Biogeography doi:10.1111/j.1365-2699.2008.02025.x. (2009).

Williams, A.P., Still, C.J., Fischer, D.T., and S.W. Leavitt. The influence of summertime fog and overcast clouds on the growth of a coastal Californian pine: a tree-ring study. Oecologia DOI: 10.1007/s00442-008-1025-y (2008).

Edwards, E.J. and C.J. Still. Climate, phylogeny, and the ecological distribution of C4 grasses. Ecology Letters 11, 266276 DOI: 10.1111/j.1461-0248.2007.01144.x (2008).

Fischer, D.T. and C.J. Still. Evaluating patterns of fog water deposition and isotopic composition on the California Channel Islands. Water Resources Research 43, W04420, DOI:10.1029/2006WR005124 (2007).

Still, C.J., Riley, W.J., Helliker, B.R. and J.A. Berry. Simulation of ecosystem C18OO isotope fluxes in a tallgrass prairie: biological and physical controls. In Stable Isotopes and Biosphere-Atmosphere Interactions (Eds. Flanagan, L.B., Ehleringer, J.R. & D.E. Pataki). Elsevier-Academic Press, Physiological Ecology Series (2005).

Still, C.J., Randerson, J.T. and I.Y. Fung. Large-scale plant light-use efficiency inferred from the seasonal cycle of atmospheric CO2. Global Change Biology, 10(8), 1240-1252 (2004).

Still, C.J., Berry, J.A., Ribas-Carbo, M. and B.R. Helliker. The contribution of C3 and C4 plants to the carbon cycle of a tallgrass prairie: An isotopic approach. Oecologia 136, 347-359 (2003).

Riley, W.J., Still, C.J., Helliker, B.R., Ribas-Carbo, M., and J.A. Berry. 2003. 18O composition of CO2 and H2O ecosystem pools and fluxes: Simulations and comparisons to measurements. Global Change Biology 9, 1567-1581 (2003).

Still, C.J., Berry, J.A., Collatz, G.J. and R.S. DeFries. The global distribution of C3 and C4 vegetation: arbon cycle implications. Global Biogeochemical Cycles 17(1), 1006, (2003).

Still, C.J., Foster, P.N. and S.H. Schneider. Simulating the effects of climate change on tropical montane cloud forests. Nature 398, 608-610 (1999).


Terrestrial Ecosystems Research & Regional Analysis - Pacific Northwest
Oregon State University, Corvallis, OR 97331
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